%0 Journal Article
%T COMPARISON BETWEEN LEAST SQUARE COLLOCATION AND ORDINARY KRIGING<br>最小二乘配置与普通Kriging法的比较
%A Yao Daorong
%A Zhong Bo
%A Wang Haihong
%A Wang Wei
%A <br>姚道荣
%A 钟 波
%A 汪海洪
%A 王 伟
%J 大地测量与地球动力学
%D 2008
%I 
%X The methods of least square collocation and ordinary Kriging are introduced,and then the similarities and differences between them in the supposing condition,estimate criterion and characters of estimate value are pointed out.The performance and accuracy estimated by collocation and ordinary Kriging are compared through an example of simulated gravity anomaly data with different observation errors and data resolution.The results show that the effect of observation error on the accuracy estimated by Kriging is greater than that by collocation under the same data resolution,and the effect of data resolution on the accuracy estimated by collocation is greater than that by Kriging under the same observation error.Finally,the two prediction techniques are applied to fit the height anomaly in a local area,the result indicates that the Ordinary Kriging is also an effective method for refining the local geoid.
%K least square collocation
%K Kriging method
%K covariance function
%K variogram
%K linear unbiased minimum variance<br>最小二乘配置
%K Kriging法
%K 协方差函数
%K 变异函数
%K 线性无偏最小方差
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=62059D7EE78BB638D7D81C1DD946DC32&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=38B194292C032A66&sid=E44E40A2398D4F2A&eid=0D0D661F0B316AD5&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=2&reference_num=9